The mass of an insulated 0.6 ????3 steel tank is 20 kg. The steel has a specific heat of 0.46 kJ/kg·K. The tank is placed in a room where the surrounding air is 21°C and 101.3 kPa. After the tank is evacuated to 7 kPa and 21°C, a valve is suddenly opened, allowing the tank to fill with room air. The air enters the tank in a well-mixed, turbulent condition. Determine; a) air temperature inside the tank after filling and after the gas and tank have reached thermal equilibrium, but before any heat loss from the tank to the room occurs. Hint: you need to use trial & error method.
I need help urgently please..!